package com.kaiyiweitong.tongxing.zxing.encoding;

import android.graphics.Bitmap;

import com.google.zxing.BarcodeFormat;
import com.google.zxing.EncodeHintType;
import com.google.zxing.MultiFormatWriter;
import com.google.zxing.WriterException;
import com.google.zxing.common.BitMatrix;

import java.util.Hashtable;

/**
 * @author Ryan Tang
 *
 */
public final class EncodingHandler {
	private static final int BLACK = 0xff000000;
	
	public static Bitmap createQRCode(String str, int widthAndHeight) throws WriterException {
		Hashtable<EncodeHintType, String> hints = new Hashtable<EncodeHintType, String>();
        hints.put(EncodeHintType.CHARACTER_SET, "iso-8859-1");
		try {
			str = new String(str.getBytes("UTF-8"),"GBK");
			BitMatrix matrix = new MultiFormatWriter().encode(str, BarcodeFormat.QR_CODE, widthAndHeight, widthAndHeight);
			int width = matrix.getWidth();
			int height = matrix.getHeight();
			int[] pixels = new int[width * height];
			
			for (int y = 0; y < height; y++) {
				for (int x = 0; x < width; x++) {
					if (matrix.get(x, y)) {
						pixels[y * width + x] = BLACK;
					}
				}
			}
			Bitmap bitmap = Bitmap.createBitmap(width, height,
					Bitmap.Config.ARGB_8888);
			bitmap.setPixels(pixels, 0, width, 0, 0, width, height);
			return bitmap;
		} catch (Exception e) {
			e.printStackTrace();
		}
		return null;
	}
}
